Hesitation

2013 MERCEDES BENZ C250
63,500 MILES • 2.1L • 4 CYL • 2WD • AUTOMATIC
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DALE POWELL
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Had my car go into limp mode , had it checked , changed inlet and outlet turbo hoses , had the dpf flushed gained this hesitation issue had no:1 injector changed as it came up on diagnostics still got the issue , had no:3 injector and fuel filter changed via a Mercedes specialist but still got an hesitation and rough running intermittent , keep on top on services and only use quality fuel get this at about 1500 revs anything above 2000 revs its runs well .

Any ideas thanks
Jul 4, 2019 at 10:26 AM
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STRAILER
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Hello,

It sounds like the throttle bore needs to be service or the MAF sensor needs to be replaced. Leave the wires connected to the throttle bore and don't force it open while cleaning. Also does the car have any codes? here are three guides to help us fix the problem:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

and

https://www.2carpros.com/articles/throttle-actuator-service

Please run down these guides and report back.
Jul 5, 2019 at 5:30 PM
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DALE POWELL
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Thank you for your reply. i will try those this weekend.
Jul 5, 2019 at 10:50 PM
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STRAILER
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Please let us know what you find. We are interested to see what it is.
Jul 7, 2019 at 12:53 PM
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DALE POWELL
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Cleaned the MAP sensor and connectors to it and it seems to have cleared the problem, but i will know more when i go on a longer run in my car tomorrow. thanks for your input.
Jul 7, 2019 at 1:13 PM
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STRAILER
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Nice work if it acts up again replace the sensor cleaning something does not work fully.
Jul 7, 2019 at 5:44 PM